function GetQueryString_ByName(name)
{
	var URL = document.URL;
	var querystring = '';
	querystring = URL.substring(URL.indexOf('?') + 1);
	var arrqs = querystring.split('&');
	
	for (var i = 0; i<arrqs.length; i++)
	{
		qsname = arrqs[i].substring(0, arrqs[i].indexOf('='));
		qsvalue = arrqs[i].substring(arrqs[i].indexOf('=') + 1);
		if (qsname == name) 
		{
			return qsvalue
		};
	}
	return '';
}

function showLayer(index, total)
{
	var divname = 'div';
	for (var i=1;i<=total;i++)
	{
		div= document.getElementById(divname + i.toString());
		
		if (i == index)
		{
			div.style.display='block';
		}
		else
		{
			div.style.display='none';
		}
	}
}

function initLayout()
{
	var selectedtab = GetQueryString_ByName('tab');
	if(selectedtab==''){
	selectedtab='education';
	}
	var tabname;
	if (selectedtab != '')
	{
		var divname = 'div';
		for (var i=1;i<=3;i++)
		{
			div= document.getElementById(divname + i.toString());
			if (i == 1)
			{
				tabname = 'webinar'
			}
			else if (i == 2)
			{
				tabname = 'seminar';
			}
			else if (i == 3)
			{
				tabname = 'education';
			}
			if (selectedtab == tabname)
			{
				div.style.display='block';
			}
			else
			{
				div.style.display='none';
			}
		}
	}
}

function switchStyle(oSpan)
{
	if(oSpan.className =='nav3b')
	{
		oSpan.className ='nav3a';
	}
	else
	{
		oSpan.className ='nav3b';
	}
	
}